fix: better sidebar (#1603)

* fix: better sidebar

* feat: better msg history

* fix: tests

lua/avante/ui.lua

@@ -0,0 +1,139 @@
+local Popup = require("nui.popup")
+local NuiText = require("nui.text")
+local event = require("nui.utils.autocmd").event
+local Highlights = require("avante.highlights")
+
+local M = {}
+
+function M.confirm(message, callback)
+  local focus_index = 2 -- 1 = Yes, 2 = No
+  local yes_button_pos = { 18, 23 }
+  local no_button_pos = { 28, 32 }
+
+  local BUTTON_NORMAL = Highlights.BUTTON_DEFAULT
+  local BUTTON_FOCUS = Highlights.BUTTON_DEFAULT_HOVER
+
+  local popup = Popup({
+    position = {
+      row = vim.o.lines - 5,
+      col = "50%",
+    },
+    size = { width = 50, height = 7 },
+    enter = true,
+    focusable = true,
+    border = {
+      style = "rounded",
+      text = { top = NuiText(" Confirmation ", Highlights.CONFIRM_TITLE) },
+    },
+    win_options = {
+      winblend = 10,
+    },
+  })
+
+  local function focus_button()
+    if focus_index == 1 then
+      vim.api.nvim_win_set_cursor(popup.winid, { 4, yes_button_pos[1] })
+    else
+      vim.api.nvim_win_set_cursor(popup.winid, { 4, no_button_pos[1] })
+    end
+  end
+
+  local function render_buttons()
+    local yes_style = (focus_index == 1) and BUTTON_FOCUS or BUTTON_NORMAL
+    local no_style = (focus_index == 2) and BUTTON_FOCUS or BUTTON_NORMAL
+
+    vim.api.nvim_buf_set_lines(popup.bufnr, 0, -1, false, {
+      "",
+      "  " .. message,
+      "",
+      "                  " .. " Yes       No ",
+      "",
+    })
+
+    vim.api.nvim_buf_add_highlight(popup.bufnr, 0, yes_style, 3, yes_button_pos[1], yes_button_pos[2])
+    vim.api.nvim_buf_add_highlight(popup.bufnr, 0, no_style, 3, no_button_pos[1], no_button_pos[2])
+    focus_button()
+  end
+
+  local function select_button()
+    popup:unmount()
+    callback(focus_index == 1)
+  end
+
+  vim.keymap.set("n", "y", function()
+    focus_index = 1
+    render_buttons()
+    select_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "n", function()
+    focus_index = 2
+    render_buttons()
+    select_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "<Left>", function()
+    focus_index = 1
+    focus_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "<Right>", function()
+    focus_index = 2
+    focus_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "<Tab>", function()
+    focus_index = (focus_index == 1) and 2 or 1
+    focus_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "<S-Tab>", function()
+    focus_index = (focus_index == 1) and 2 or 1
+    focus_button()
+  end, { buffer = popup.bufnr })
+
+  vim.keymap.set("n", "<CR>", function() select_button() end, { buffer = popup.bufnr })
+
+  vim.api.nvim_buf_set_keymap(popup.bufnr, "n", "<LeftMouse>", "", {
+    callback = function()
+      local pos = vim.fn.getmousepos()
+      local row, col = pos["winrow"], pos["wincol"]
+      if row == 4 then
+        if col >= yes_button_pos[1] and col <= yes_button_pos[2] then
+          focus_index = 1
+          render_buttons()
+          select_button()
+        elseif col >= no_button_pos[1] and col <= no_button_pos[2] then
+          focus_index = 2
+          render_buttons()
+          select_button()
+        end
+      end
+    end,
+    noremap = true,
+    silent = true,
+  })
+
+  vim.api.nvim_create_autocmd("CursorMoved", {
+    buffer = popup.bufnr,
+    callback = function()
+      local row, col = unpack(vim.api.nvim_win_get_cursor(0))
+      if row == 4 then
+        if col >= yes_button_pos[1] and col <= yes_button_pos[2] then
+          focus_index = 1
+          render_buttons()
+        elseif col >= no_button_pos[1] and col <= no_button_pos[2] then
+          focus_index = 2
+          render_buttons()
+        end
+      end
+    end,
+  })
+
+  popup:on(event.BufLeave, function() popup:unmount() end)
+
+  popup:mount()
+  render_buttons()
+end
+
+return M